Chemical Crossover Accelerates Degradation of Lithium Electrode Rechargeable Lithium–Oxygen Batteries (IMAGE)
Caption
Figure. (a) Schematic illustration of a lithium–oxygen battery without a protective layer. (b) Cross-sectional SEM image of lithium negative electrodes taken out from the cell after charge/discharge cycles without a protective layer. The thickness of the electrode diminished from the initial 100 μm down to about 50 μm as it severely degraded. (c) Schematic illustration of a lithium–oxygen battery with a protective layer. (d) Cross-sectional SEM image of lithium negative electrodes taken out from the cell after charge/discharge cycles with a protective layer. Its initial 100-μm thickness remained mostly unchanged, indicating that the protective layer is effective in reducing electrode degradation. The white scale bars represent 20 μm in length.
Credit
Shoichi Matsuda National Institute for Materials Science
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